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Cooperative Spectrum Sensing and Signal Detection in Cognitive Radio

Armi, Nasrullah and M Saad, M Naufal and Yusoff, Mohd Zuki and Arshad, Muhammad (2011) Cooperative Spectrum Sensing and Signal Detection in Cognitive Radio. In: The 3rd International Conference on Intelligent & Advanced Systems 2010 (ICIAS2010), June 15 to 17, 2010, Kuala Lumpur Convention Centre, Kuala Lumpur.

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Abstract

Cognitive radio (CR) is expected to be the key enabling technology for increased spectrum utilization. As primary user activity is not spatially localized, a collaborative measure amongst multiple cognitive radio nodes has been suggested as a more accurate model of activity. This scheme was proposed to combat noise fading and shadowing as well as improves the probability of detection by collaborating to detect primary user signal. This paper studies cooperative spectrum sensing and signal detection in cognitive radio system by implementing hard decision combining in data fusion centre. Through computer simulation, we evaluate the performances of cooperative signal detection by employing OR and AND rules as decision combining. Energy detector is used to observe the presence of primary user signal. The results are compared to non-cooperative signal detection for evaluation. They show that greater than 10 dB of SNR and 15 collaborated users in cognitive radio system is optimal value for probability of detection.

Item Type:Conference or Workshop Item (Poster)
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:4706
Deposited By: Dr Mohd Zuki Yusoff
Deposited On:25 Mar 2011 00:34
Last Modified:19 Jan 2017 08:22

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